Eh. It is kind of bullshit that you have to buy the game/expansion on both platforms when the PC client itself is free to download on the website. It would be a lot more consumer friendly if buying a license for the game entitled you to play it on all platforms the game exists on.
seriously, FFXI allowed you to play on any client you wanted no matter want as long as you owned the discs. So half the time I bought the discs used on Ebay without codes because you didn't need the codes....1 key worked for all 3 platforms.